BEGIN;
BEGIN
create or replace view revenue15 (supplier_no, total_revenue) as
	select
		l_suppkey,
		sum(l_extendedprice * (1 - l_discount))
	from
		lineitem
	where
		l_shipdate >= '1996-04-01'
		and l_shipdate < date'1996-04-01' + interval '90 days'
	group by
		l_suppkey;
CREATE VIEW
EXPLAIN (ANALYZE, BUFFERS)
select
	s_suppkey,
	s_name,
	s_address,
	s_phone,
	total_revenue
from
	supplier,
	revenue15
where
	s_suppkey = supplier_no
	and total_revenue = (
		select
			max(total_revenue)
		from
			revenue15
	)
order by
	s_suppkey;
                                                                                       QUERY PLAN                                                                                        
-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
 Merge Join  (cost=2376975.93..2382073.15 rows=3717 width=79) (actual time=81480.593..81480.600 rows=1 loops=1)
   Merge Cond: (supplier.s_suppkey = revenue15.supplier_no)
   Buffers: shared hit=302671 read=1026668 dirtied=415 written=21978
   InitPlan 1 (returns $0)
     ->  Aggregate  (cost=1179936.09..1179936.10 rows=1 width=8) (actual time=38630.376..38630.376 rows=1 loops=1)
           Buffers: shared hit=199392 read=464716 written=376
           ->  HashAggregate  (cost=1179852.46..1179889.63 rows=3717 width=12) (actual time=38552.589..38615.633 rows=100000 loops=1)
                 Buffers: shared hit=199392 read=464716 written=376
                 ->  Bitmap Heap Scan on lineitem  (cost=47528.71..1157341.36 rows=2251110 width=12) (actual time=2158.737..33714.112 rows=2246666 loops=1)
                       Recheck Cond: ((l_shipdate >= '1996-04-01'::date) AND (l_shipdate < '1996-06-30 00:00:00'::timestamp without time zone))
                       Buffers: shared hit=199392 read=464716 written=376
                       ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46965.93 rows=2251110 width=0) (actual time=1724.811..1724.811 rows=2268788 loops=1)
                             Index Cond: ((l_shipdate >= '1996-04-01'::date) AND (l_shipdate < '1996-06-30 00:00:00'::timestamp without time zone))
                             Buffers: shared hit=6135
   ->  Index Scan using pk_supplier on supplier  (cost=0.00..4791.46 rows=100000 width=71) (actual time=0.088..30.570 rows=40980 loops=1)
         Buffers: shared hit=1122
   ->  Sort  (cost=1197039.83..1197049.12 rows=3717 width=12) (actual time=81443.674..81443.676 rows=1 loops=1)
         Sort Key: revenue15.supplier_no
         Sort Method: quicksort  Memory: 25kB
         Buffers: shared hit=301549 read=1026668 dirtied=415 written=21978
         ->  Subquery Scan on revenue15  (cost=1196735.78..1196819.41 rows=3717 width=12) (actual time=81438.403..81443.642 rows=1 loops=1)
               Buffers: shared hit=301549 read=1026668 dirtied=415 written=21978
               ->  HashAggregate  (cost=1196735.78..1196782.24 rows=3717 width=12) (actual time=81438.401..81443.638 rows=1 loops=1)
                     Filter: (sum((public.lineitem.l_extendedprice * (1::double precision - public.lineitem.l_discount))) = $0)
                     Rows Removed by Filter: 99999
                     Buffers: shared hit=301549 read=1026668 dirtied=415 written=21978
                     ->  Bitmap Heap Scan on lineitem  (cost=47528.71..1157341.36 rows=2251110 width=12) (actual time=2239.357..37855.878 rows=2246666 loops=1)
                           Recheck Cond: ((l_shipdate >= '1996-04-01'::date) AND (l_shipdate < '1996-06-30 00:00:00'::timestamp without time zone))
                           Buffers: shared hit=102157 read=561952 dirtied=415 written=21602
                           ->  Bitmap Index Scan on lineitem_l_shipdate_l_suppkey__idx  (cost=0.00..46965.93 rows=2251110 width=0) (actual time=1781.853..1781.853 rows=2266479 loops=1)
                                 Index Cond: ((l_shipdate >= '1996-04-01'::date) AND (l_shipdate < '1996-06-30 00:00:00'::timestamp without time zone))
                                 Buffers: shared hit=6132 read=4
 Total runtime: 81494.864 ms
(33 rows)

drop view revenue15;
DROP VIEW
COMMIT;
COMMIT